HELP Caliper question - GL 1200 Aspencade 1986 US


Information and questions on GL1200 Goldwings (1984-1987)
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Damgaard
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Joined: Tue May 21, 2013 11:15 am
Location: Denmark, Tonder 4 km from the Danish/German border
Motorcycle: GL 1200 Aspencade 1985

HELP Caliper question - GL 1200 Aspencade 1986 US

Postby Damgaard » Tue Jan 28, 2014 12:53 pm



Hi

I am restoring my GL1200, but piston diameter is different in the front calipers. One is 25mm bore and the other is 32mm. Is that normal or has a previous owner mounted different bore size calipers ?

Help needed.

Regards from Denmark
Lars
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WingAdmin
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Re: HELP Caliper question - GL 1200 Aspencade 1986 US

Postby WingAdmin » Tue Jan 28, 2014 1:14 pm

Damgaard wrote:Hi

I am restoring my GL1200, but piston diameter is different in the front calipers. One is 25mm bore and the other is 32mm. Is that normal or has a previous owner mounted different bore size calipers ?

Help needed.

Regards from Denmark
Lars


This is normal. The right caliper is linked to the rear brakes, so it needs to handle less fluid volume (because it is being divided between two calipers). Therefore, it has a smaller diameter bore/piston diameter. The left caliper is controlled solely by the brake lever, so it has a larger bore/piston diameter.

User avatar
Damgaard
Posts: 35
Joined: Tue May 21, 2013 11:15 am
Location: Denmark, Tonder 4 km from the Danish/German border
Motorcycle: GL 1200 Aspencade 1985

Re: HELP Caliper question - GL 1200 Aspencade 1986 US

Postby Damgaard » Tue Jan 28, 2014 1:40 pm

Thank you very much - Great help :D


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